W40.8XXS — Explosion of other specified explosive materials, sequela
W40.8XXS is a billable, specific ICD-10-CM code for explosion of other specified explosive materials, sequela. It is valid for submission on a claim.
7th character "S" — sequela
The appropriate 7th character is to be added to each code from category W40
- A
- initial encounter
- D
- subsequent encounter
- S
- sequela
Excludes1 — never code together
These conditions cannot occur together. Billing both on the same encounter is a denial.
Inclusion terms
Alternative wordings a physician may use in the chart for this same code.
- Explosion in dump NOS
- Explosion in factory NOS
- Explosion in grain store
- Explosion in munitions
Excludes1 inherited from the categories above W40.8XXS
These are not written on W40.8XXS, but they bind it: a note on a category applies to every code beneath it. Billing W40.8XXS with anything listed here is a denial.
Written on W40.8 — Explosion of other specified explosive materials
Risk adjustment
W40.8XXS does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.
Code history
W40.8XXS has not changed since FY2024 — no addition, revision or deletion across the three most recent ICD-10-CM releases.
Related codes at this level
Codes that share W40.8. If W40.8XXS is not quite right, the correct code is usually one of these.
Questions about W40.8XXS
- Is W40.8XXS a billable ICD-10-CM code?
- Yes. W40.8XXS is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does W40.8XXS sit in the tabular list?
- External causes of morbidity (V00-Y99), in the block Exposure to inanimate mechanical forces (W20-W49).
- What cannot be coded together with W40.8XXS?
- W40.8XXS carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter. Some are written on the categories above W40.8XXS (W40.8, W40) and apply to it just the same.